Viking Horns V310 Chrome Very Loud 152dB 4/Four Trumpet Train Sound Air Horn Metal Base Sound Output: 152 decibels at a loud low pitch sound Construction: Chrome plated Base and trumpets Includes electric solenoid, hardware, and air hose Requires on board air system Horn Size: 15-1/2" L x 11-1/2" W x 12-1/2" H